node/benchmark/buffers/buffer-base64-decode.js

'use strict';
const assert = require('assert');
const common = require('../common.js');

const bench = common.createBenchmark(main, {
  n: [32],
  size: [8 << 20],
});

function main({ n, size }) {
  const s = 'abcd'.repeat(size);
  const encodedSize = s.length * 3 / 4;
  // eslint-disable-next-line node-core/no-unescaped-regexp-dot
  s.match(/./);  // Flatten string.
  assert.strictEqual(s.length % 4, 0);
  const b = Buffer.allocUnsafe(encodedSize);
  b.write(s, 0, encodedSize, 'base64');

  let tmp;

  bench.start();

  for (let i = 0; i < n; i += 1)
    tmp = b.base64Write(s, 0, s.length);

  bench.end(n);

  assert.strictEqual(tmp, encodedSize);
}